There are three choices. The TR3839 departs London at 05:39 and arrives Cambridge at 07:07. That's the earliest departure. Would you like to book a ticket?
Yes, for 3 people, please.
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train-arriveby train-day train-departure train-destination train-people
train-arriveby train-day train-departure train-destination train-people
train-arriveby train-day train-departure train-destination train-people